Two-dimension code coding and decoding method and device based on local color verification

A coding method and two-dimensional code technology, applied in the field of decoding devices, can solve problems such as limited coding space, and achieve the effects of preventing counterfeiting, ensuring integrity, strengthening anti-counterfeiting and uniqueness

Active Publication Date: 2013-02-06
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the standard QR code version uses black and white and two colors, and its coding space is also limited.

Method used

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  • Two-dimension code coding and decoding method and device based on local color verification
  • Two-dimension code coding and decoding method and device based on local color verification
  • Two-dimension code coding and decoding method and device based on local color verification

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Embodiment 1

[0046] In this embodiment, the two-dimensional code encoding device based on local color verification is as follows: figure 1 As shown, the device includes a stained area data generating device, a two-dimensional code generating device and a two-dimensional code color image generating device, and the two-dimensional code generating device includes an encryption module, a splicing module and a two-dimensional code encoding module connected in sequence.

[0047] The dyeing area data generation device is used to generate the relevant data of the dyeing area (including the number, color, shape, etc.) of the dyeing area in the two-dimensional code template according to the pre-defined dyeing area encoding and decoding table.

[0048] The encryption module is used to encrypt the hidden information to be encrypted by using the dyed area data as a key.

[0049] The merging module is used to merging the unencrypted plaintext information and the encrypted hidden information, and then se...

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PUM

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Abstract

The invention discloses a two-dimension code coding and decoding method and devices based on local color verification. The coding method comprises the following steps of: generating coloring region data randomly according to a predefined coloring region coding and decoding table, and taking the generated coloring region data as a secret key to perform encryption so as to obtain two-dimension code generation information; generating two-dimension code black-and-white images by a two-dimension code generation algorithm; and finally coloring the generated two-dimension code black-and-white images according to the coloring region data to obtain local colored two-dimension code images. The decoding method comprises the following steps of: reading the coloring region data on the two-dimension code images, and using a standard two-dimension code decoding algorithm to decode; and performing decryption on the decoded information by taking the coloring region data as the secret key via a decipherment algorithm to obtain original information of the two-dimension cod images. By using the invention based on original black and white colors, the coloring region information is increased, coding space of two-dimension codes can be expanded, and counterfeited difficulty is increased.

Description

technical field [0001] The invention relates to the field of two-dimensional code coding and decoding research, in particular to a two-dimensional code coding method, coding device, decoding method and decoding device based on local color verification. Background technique [0002] Two-dimensional code is to record data symbol information with a specific geometric figure distributed on a plane (two-dimensional direction) according to a certain rule, ingeniously using "0", The concept of "1" bit stream uses several geometric shapes corresponding to binary to represent text and numerical information, which can be automatically read by image input equipment or photoelectric scanning equipment to realize automatic information processing. It has some common features of barcode technology: each code system has its specific character set; each character occupies a certain width; it has certain verification functions, etc. At the same time, it also has the characteristics of automa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/06G06K19/06
Inventor 林毅申曹维刘财兴林丕源梁晓婷肖媚燕
Owner SOUTH CHINA AGRI UNIV
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